Hydrogen and its compoundHard
Question
The aqueous solution of the follwoing salts will be coloured in the case fo :
Options
A.Zn(NO3)2
B.LiNO3
C.Co(NO3)2
D.CrCl3
Solution
Co2+[NiCo(NO3)2] and Cr3+ [in CrCl3 have E. C. [Ar]3d7, 4s0 and [Ar] 3d3, 4s0
respectively and thus are coloured due to d-d transition. Others are colourless.
respectively and thus are coloured due to d-d transition. Others are colourless.
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